Noah Webster
Bowels
BOW'ELS, noun plural
1. The intestines of an animal; the entrails, especially of man. The heart. 2 Corinthians 6:12.
2. The interior part of any thing; as the bowels of the earth.
3. The seat of pity or kindness; hence, tenderness, compassion, a scriptural sense.
Bowel, in the singular, is sometimes used for gut.